El profesor se sorprenderá mucho al ver tu solución correcta😉
/ x \ |1 - ----|*100 31 \ 13/5/ --- = -------------- 100 100
(31/100) = (1-x/(13/5))*100*(1/100)
31/100 = (1-x/(13/5))*100*(1/100)
31/100 = 1-x/+13/5)*100*1/100
x = 69/100 / (5/13)
suma
897 --- 500
=
897 --- 500
producto
897 --- 500
=
897 --- 500
897/500